1 files changed, 2 insertions, 0 deletions

diff --git a/src/regex.c b/src/regex.c
index 455c6cfb05e..41f2cafa539 100644
--- a/src/regex.c
+++ b/src/regex.c
@@ -237,9 +237,11 @@ init_syntax_once ()
 #if HAVE_ALLOCA_H
 #include <alloca.h>
 #else /* not __GNUC__ or HAVE_ALLOCA_H */
+#if 0 /* It is a bad idea to declare alloca.  We always cast the result.  */
 #ifndef _AIX /* Already did AIX, up at the top.  */
 char *alloca ();
 #endif /* not _AIX */
+#endif
 #endif /* not HAVE_ALLOCA_H */ 
 #endif /* not __GNUC__ */